Thank you for your reply. Another question is, with my current blog template now, is it possible for me to add a “Read More” button?
You have to develop custom code to achieve this.
If I would like to Featured my blog post, so that it will always be at the top, can I achieve this using plugins?
You can make that post as sticky post so that it will always display at the top.
Solution for this topic
The sticky post is a WordPress standard feature that you can use as described in the following page.